1. DNS Server (Domain Name System)
- Think of DNS as the internet’s phonebook.
- It translates human-friendly website names like example.com into IP addresses like 192.0.2.1.
- When you type a URL, your device contacts a DNS server to find the right IP to connect to.
2. How Google Searches Your Webpage
- Google uses web crawlers (spiders) to scan and index websites.
- Steps:
1. Crawling – Googlebot visits and reads your pages.
2. Indexing – Content is analyzed and added to Google’s index.
3. Ranking – Pages are ranked using algorithms (relevance, keywords, backlinks, etc.).
- Good SEO practices help your site get noticed faster and ranked higher.
3. What Are Cookies?
- Cookies are small text files saved by websites in your browser.
- Purpose:
- Remember login status
- Store user preferences
- Track user behavior for analytics and ads
- Types:
- Session cookies (temporary)
- Persistent cookies (remain until deleted)
- Third-party cookies (set by different domains, often for advertising)
4. HTTPS (Hypertext Transfer Protocol Secure)
- HTTPS = HTTP + TLS/SSL encryption
- Ensures data sent between your browser and the website is encrypted and secure.
- Indicated by a lock icon in the browser address bar.
- Helps protect against eavesdropping and tampering.
5. What Are Name Servers?
- Name servers are part of DNS—they store records that link domain names to IP addresses.
- When you buy a domain, you set name servers (e.g., ns1.provider.com) to point traffic to the correct hosting provider.
6. How Server Mirroring Works
- Server mirroring is when identical copies of data are maintained across multiple servers.
- Benefits:
- Redundancy – If one server fails, another can take over.
- Load Balancing – Spreads traffic, improves performance.
- Disaster Recovery – Keeps services running during outages.
No comments:
Post a Comment